监督学习是指你为算法提供的数据被“标记”或“标记”，以帮助你的逻辑做出决策。

示例:贝叶斯垃圾邮件过滤，您必须将一个项目标记为垃圾邮件以优化结果。

无监督学习是一种试图在原始数据之外没有任何外部输入的情况下找到相关性的算法。

例如:数据挖掘聚类算法。

In simple words.. :) It's my understanding, feel free to correct. Supervised learning is, we know what we are predicting on the basis of provided data. So we have a column in the dataset which needs to be predicated. Unsupervised learning is, we try to extract meaning out of the provided dataset. We don't have clarity on what to be predicted. So question is why we do this?.. :) Answer is - the outcome of Unsupervised learning is groups/clusters(similar data together). So if we receive any new data then we associate that with the identified cluster/group and understand it's features.

我希望它能帮助你。

监督式学习

在这种情况下，用于训练网络的每个输入模式都是 与输出模式相关联，它是目标或所需的 模式。在学习过程中假定有老师在场 过程，当对网络的计算结果进行比较时 输出和正确的预期输出，以确定误差。的 错误可以用来更改网络参数，从而导致 性能的提高。

无监督学习

在这种学习方法中，目标输出不会呈现给机器 网络。这就好像没有老师来呈现所渴望的 模式，因此，系统通过发现和学习自己 适应输入模式中的结构特征。

我可以给你们举个例子。

假设您需要识别哪些车辆是汽车，哪些是摩托车。

在监督学习的情况下，你的输入(训练)数据集需要被标记，也就是说，对于你的输入(训练)数据集中的每个输入元素，你应该指定它是代表一辆汽车还是一辆摩托车。

在无监督学习的情况下，你不标记输入。无监督模型将输入聚类到基于相似特征/属性的聚类中。所以，在这种情况下，没有像“car”这样的标签。

监督学习:你有标记的数据，必须从中学习。例如，房屋数据和价格，然后学会预测价格

无监督学习:你必须找到趋势，然后预测，没有预先给出的标签。 例句:班里有不同的人，然后又来了一个新同学，那么这个新同学属于哪个组呢?

既然你问了这个非常基本的问题，似乎有必要详细说明机器学习本身是什么。

Machine Learning is a class of algorithms which is data-driven, i.e. unlike "normal" algorithms it is the data that "tells" what the "good answer" is. Example: a hypothetical non-machine learning algorithm for face detection in images would try to define what a face is (round skin-like-colored disk, with dark area where you expect the eyes etc). A machine learning algorithm would not have such coded definition, but would "learn-by-examples": you'll show several images of faces and not-faces and a good algorithm will eventually learn and be able to predict whether or not an unseen image is a face.

这个特殊的人脸检测的例子是有监督的，这意味着你的例子必须被标记，或者明确地说哪些是人脸，哪些不是。

在无监督算法中，你的例子没有标记，也就是说你什么都不说。当然，在这种情况下，算法本身不能“发明”人脸是什么，但它可以尝试将数据聚类到不同的组中，例如，它可以区分人脸与风景非常不同，而风景与马非常不同。

Since another answer mentions it (though, in an incorrect way): there are "intermediate" forms of supervision, i.e. semi-supervised and active learning. Technically, these are supervised methods in which there is some "smart" way to avoid a large number of labeled examples. In active learning, the algorithm itself decides which thing you should label (e.g. it can be pretty sure about a landscape and a horse, but it might ask you to confirm if a gorilla is indeed the picture of a face). In semi-supervised learning, there are two different algorithms which start with the labeled examples, and then "tell" each other the way they think about some large number of unlabeled data. From this "discussion" they learn.